package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
//        System.out.println(password);
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

   /**
    * 新增员工
    * @param employeeDTO
    */
    public void save(EmployeeDTO employeeDTO) {
        System.out.println("当前线程的id:"+ Thread.currentThread().getId());

        Employee employee = new Employee();
    //    对象属性拷贝
        BeanUtils.copyProperties(employeeDTO, employee);
    //    设置账号状态 默认正常状态 1表示正常 0表示锁定
        employee.setStatus(StatusConstant.ENABLE);
    //    设置密码 默认123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
    //    设置创建你时间和更新时间
    //    employee.setCreateTime(LocalDateTime.now());
    //    employee.setUpdateTime(LocalDateTime.now());

    //    设置当前记录创建人id和修改人id
    //    由10L修改为线程的局部变量
    //    System.out.println("业务层的id" + BaseContext.getCurrentId());
    //    employee.setCreateUser(BaseContext.getCurrentId());
    //    employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);
    }

    /**
     * 分页查询
     * @param employeePageQueryDTO
     * @return
     * */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page =  employeeMapper.pageQuery(employeePageQueryDTO);

        //对page进行加工
        long total = page.getTotal();
        List<Employee> records =  page.getResult();
        return new PageResult(total,records);
    }


    /**
     * 员工状态的启用与禁用
     * @param status
     * @param id
     * @return
     * */
    @Override
    public void startOrStop(Integer status, Long id) {
        //创建实体类编写为动态
        //Employee employee = new Employee();
        //employee.setStatus(status);
        //employee.setId(id);
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();

        employeeMapper.update(employee);

    }


    /**
     * 根据id查询
     * @param id
     * @return
     * */
    @Override
    public Employee getId(Long id) {
        Employee employee = employeeMapper.selectId(id);

        //处理密码保证安全
        employee.setPassword("******");
        return employee;
    }

    /**
     * 员工的信息修改
     * @param employeeDTO
     * @return
     * */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //使用属性拷贝转换为employee对象中
        BeanUtils.copyProperties(employeeDTO, employee);

        //设置修改时间以及修改人
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }

}
